TWI711219B - Antenna system - Google Patents
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- TWI711219B TWI711219B TW108138963A TW108138963A TWI711219B TW I711219 B TWI711219 B TW I711219B TW 108138963 A TW108138963 A TW 108138963A TW 108138963 A TW108138963 A TW 108138963A TW I711219 B TWI711219 B TW I711219B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
- H01Q5/385—Two or more parasitic elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
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Abstract
Description
本發明係關於一種天線系統(Antenna System),特別係關於可改善隔離度(Isolation)之天線系統。The present invention relates to an antenna system (Antenna System), and particularly relates to an antenna system that can improve isolation (Isolation).
隨著行動通訊技術的發達,行動裝置在近年日益普遍,常見的例如:手提式電腦、行動電話、多媒體播放器以及其他混合功能的攜帶型電子裝置。為了滿足人們的需求,行動裝置通常具有無線通訊的功能。有些涵蓋長距離的無線通訊範圍,例如:行動電話使用2G、3G、LTE(Long Term Evolution)系統及其所使用700MHz、850 MHz、900MHz、1800MHz、1900MHz、2100MHz、2300MHz以及2500MHz的頻帶進行通訊,而有些則涵蓋短距離的無線通訊範圍,例如:Wi-Fi、Bluetooth系統使用2.4GHz、5.2GHz和5.8GHz的頻帶進行通訊。With the development of mobile communication technology, mobile devices have become more and more common in recent years, such as portable computers, mobile phones, multimedia players and other portable electronic devices with mixed functions. In order to meet people's needs, mobile devices usually have wireless communication functions. Some cover long-distance wireless communication ranges. For example, mobile phones use 2G, 3G, LTE (Long Term Evolution) systems and the 700MHz, 850 MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz, and 2500MHz frequency bands used for communication. Others cover short-distance wireless communication ranges, such as: Wi-Fi and Bluetooth systems use 2.4GHz, 5.2GHz and 5.8GHz frequency bands for communication.
天線系統(Antenna System)為支援無線通訊之行動裝置中不可或缺之元件。然而,由於行動裝置內部空間狹小,各個天線之配置往往極為接近,容易互相干擾。因此,有必要設計一種全新的天線系統,以改良傳統天線系統中隔離度(Isolation)不佳之問題。The antenna system (Antenna System) is an indispensable component in mobile devices that support wireless communication. However, due to the small internal space of the mobile device, the configuration of the antennas is often very close, and it is easy to interfere with each other. Therefore, it is necessary to design a brand-new antenna system to improve the problem of poor isolation in the traditional antenna system.
在較佳實施例中,本發明提出一種天線系統,包括:一第一天線,包括:一第一饋入部,具有一第一饋入點;一第一輻射部,耦接至該第一饋入部;以及一短路部,其中該第一饋入部係經由該短路部耦接至一第一接地點;一第二天線,包括:一第二饋入部,具有一第二饋入點;一第二輻射部,耦接至該第二饋入部;以及一第三輻射部,耦接至該第二饋入部,其中該第二輻射部和該第三輻射部大致朝相反方向作延伸;一第一寄生部,耦接至一第二接地點;以及一第二寄生部,耦接至一第三接地點,其中該第一寄生部和該第二寄生部皆設置於該第一天線和該第二天線之間,並大致朝互相遠離之方向作延伸。In a preferred embodiment, the present invention provides an antenna system, including: a first antenna, including: a first feeding part having a first feeding point; a first radiating part coupled to the first A feeding portion; and a short-circuiting portion, wherein the first feeding portion is coupled to a first grounding point via the short-circuiting portion; a second antenna includes: a second feeding portion having a second feeding point; A second radiating portion coupled to the second feeding portion; and a third radiating portion coupled to the second feeding portion, wherein the second radiating portion and the third radiating portion extend substantially in opposite directions; A first parasitic part, coupled to a second ground point; and a second parasitic part, coupled to a third ground point, wherein the first parasitic part and the second parasitic part are both set on the first day Between the wire and the second antenna, and generally extend in the direction away from each other.
在一些實施例中,該天線系統更包括:一非導體支撐元件,用於支撐該第一天線、該第二天線、該第一寄生部,以及該第二寄生部,其中該非導體支撐元件具有彼此不平行之一第一表面和一第二表面。In some embodiments, the antenna system further includes: a non-conductor support element for supporting the first antenna, the second antenna, the first parasitic part, and the second parasitic part, wherein the non-conductor supports The element has a first surface and a second surface that are not parallel to each other.
在一些實施例中,該第一輻射部係呈現一U字形。In some embodiments, the first radiation part presents a U-shape.
在一些實施例中,該第一輻射部係由該非導體支撐元件之該第一表面上延伸至該第二表面上。In some embodiments, the first radiation portion extends from the first surface to the second surface of the non-conductor support element.
在一些實施例中,該短路部係呈現一蜿蜒形狀。In some embodiments, the short-circuit portion has a serpentine shape.
在一些實施例中,該短路部係位於該非導體支撐元件之該第一表面上。In some embodiments, the short-circuit portion is located on the first surface of the non-conductor support element.
在一些實施例中,該第二輻射部係呈現一較短直條形。In some embodiments, the second radiating portion has a shorter straight bar shape.
在一些實施例中,該第二輻射部係位於該非導體支撐元件之該第一表面上。In some embodiments, the second radiating portion is located on the first surface of the non-conductor supporting element.
在一些實施例中,該第三輻射部係呈現一較長直條形。In some embodiments, the third radiating portion has a long straight strip shape.
在一些實施例中,該第三輻射部係位於該非導體支撐元件之該第一表面上。In some embodiments, the third radiating part is located on the first surface of the non-conductor supporting element.
在一些實施例中,該第一寄生部係呈現一倒L字形。In some embodiments, the first parasitic part has an inverted L shape.
在一些實施例中,該第一寄生部係由該非導體支撐元件之該第一表面上延伸至該第二表面上。In some embodiments, the first parasitic portion extends from the first surface to the second surface of the non-conductor support element.
在一些實施例中,該第二寄生部係呈現一L字形。In some embodiments, the second parasitic part presents an L-shape.
在一些實施例中,該第二寄生部係由該非導體支撐元件之該第一表面上延伸至該第二表面上。In some embodiments, the second parasitic portion extends from the first surface to the second surface of the non-conductor support element.
在一些實施例中,該第一天線和該第二天線皆涵蓋介於2496MHz至2690MHz之間之一第一頻帶,以及介於3300MHz至3800MHz之間之一第二頻帶。In some embodiments, the first antenna and the second antenna both cover a first frequency band between 2496 MHz and 2690 MHz, and a second frequency band between 3300 MHz and 3800 MHz.
在一些實施例中,該第一饋入部和該第一輻射部之總長度係介於該第一頻帶之0.15倍至0.2倍波長之間。In some embodiments, the total length of the first feeding portion and the first radiating portion is between 0.15 and 0.2 wavelengths of the first frequency band.
在一些實施例中,該第一饋入部和該短路部之總長度係介於該第二頻帶之0.3倍至0.4倍波長之間。In some embodiments, the total length of the first feeding portion and the short-circuit portion is between 0.3 times and 0.4 times the wavelength of the second frequency band.
在一些實施例中,該第二饋入部和該第二輻射部之總長度係介於該第二頻帶之0.1倍至0.12倍波長之間。In some embodiments, the total length of the second feeding portion and the second radiating portion is between 0.1 times and 0.12 times the wavelength of the second frequency band.
在一些實施例中,該第二饋入部和該第三輻射部之總長度係介於該第一頻帶之0.12倍至0.14倍波長之間。In some embodiments, the total length of the second feeding portion and the third radiating portion is between 0.12 times and 0.14 times the wavelength of the first frequency band.
在一些實施例中,該第一寄生部和該第二寄生部之間距係介於1.1mm至2mm之間。In some embodiments, the distance between the first parasitic part and the second parasitic part is between 1.1 mm and 2 mm.
為讓本發明之目的、特徵和優點能更明顯易懂,下文特舉出本發明之具體實施例,並配合所附圖式,作詳細說明如下。In order to make the purpose, features and advantages of the present invention more comprehensible, specific embodiments of the present invention are listed below, with the accompanying drawings, and detailed descriptions are as follows.
在說明書及申請專利範圍當中使用了某些詞彙來指稱特定的元件。本領域技術人員應可理解,硬體製造商可能會用不同的名詞來稱呼同一個元件。本說明書及申請專利範圍並不以名稱的差異來作為區分元件的方式,而是以元件在功能上的差異來作為區分的準則。在通篇說明書及申請專利範圍當中所提及的「包含」及「包括」一詞為開放式的用語,故應解釋成「包含但不僅限定於」。「大致」一詞則是指在可接受的誤差範圍內,本領域技術人員能夠在一定誤差範圍內解決所述技術問題,達到所述基本之技術效果。此外,「耦接」一詞在本說明書中包含任何直接及間接的電性連接手段。因此,若文中描述一第一裝置耦接至一第二裝置,則代表該第一裝置可直接電性連接至該第二裝置,或經由其它裝置或連接手段而間接地電性連接至該第二裝置。Certain words are used in the specification and the scope of the patent application to refer to specific elements. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and the scope of patent application do not use differences in names as a way to distinguish elements, but use differences in functions of elements as a criterion. The terms "including" and "including" mentioned in the entire specification and the scope of the patent application are open-ended terms, so they should be interpreted as "including but not limited to". The term "approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and achieve the basic technical effect. In addition, the term "coupling" includes any direct and indirect electrical connection means in this specification. Therefore, if it is described in the text that a first device is coupled to a second device, it means that the first device can be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connecting means. Two devices.
以下的揭露內容提供許多不同的實施例或範例以實施本案的不同特徵。以下的揭露內容敘述各個構件及其排列方式的特定範例,以簡化說明。當然,這些特定的範例並非用以限定。例如,若是本揭露書敘述了一第一特徵形成於一第二特徵之上或上方,即表示其可能包含上述第一特徵與上述第二特徵是直接接觸的實施例,亦可能包含了有附加特徵形成於上述第一特徵與上述第二特徵之間,而使上述第一特徵與第二特徵可能未直接接觸的實施例。另外,以下揭露書不同範例可能重複使用相同的參考符號或(且)標記。這些重複係為了簡化與清晰的目的,並非用以限定所討論的不同實施例或(且)結構之間有特定的關係。The following disclosure provides many different embodiments or examples to implement different features of this case. The following disclosure describes specific examples of each component and its arrangement to simplify the description. Of course, these specific examples are not meant to be limiting. For example, if this disclosure describes that a first feature is formed on or above a second feature, it means that it may include an embodiment in which the first feature is in direct contact with the second feature, or it may include additional The feature is formed between the first feature and the second feature, and the first feature and the second feature may not be in direct contact with each other. In addition, different examples of the following disclosure may repeatedly use the same reference symbol or (and) mark. These repetitions are for the purpose of simplification and clarity, and are not used to limit the specific relationship between the different embodiments or (and) structures discussed.
第1圖係顯示根據本發明一實施例所述之天線系統(Antenna System)100之前視圖。第2圖係顯示根據本發明一實施例所述之天線系統100之俯視圖。請一併參考第1、2圖。天線系統100可應用於一行動裝置(Mobile Device)當中,例如:一智慧型手機(Smart Phone)、一平板電腦(Tablet Computer),或是一筆記型電腦(Notebook Computer)。如第1、2圖所示,天線系統100至少包括:一第一天線(Antenna)110、一第二天線150、一第一寄生部(Parasitic Element)210,以及一第二寄生部220,其中第一寄生部210和第二寄生部220皆設置於第一天線110和第二天線150之間。第一天線110、第二天線150、第一寄生部210,以及第二寄生部220皆可用金屬材質製成,例如:銅、銀、鋁、鐵,或是其合金。FIG. 1 shows a front view of an antenna system (Antenna System) 100 according to an embodiment of the invention. FIG. 2 shows a top view of the
在一些實施例中,天線系統100更包括一非導體支撐元件230,其可用塑膠材質製成。非導體支撐元件230係用於支撐第一天線110、第二天線150、第一寄生部210,以及第二寄生部220。非導體支撐元件230可具有彼此不平行之一第一表面E1和一第二表面E2,使得分佈於其上之天線系統100之天線和寄生部可呈現一立體式結構。例如,第一表面E1和第二表面E2可以是互相鄰近且垂直之二平面。然而,本發明並不僅限於此。在另一些實施例中,第一表面E1和第二表面E2之間可具有不同夾角(例如:30度、45度,或是60度),抑或第一表面E1和第二表面E2可彼此平行且重合,使得分佈於其上之天線系統100之天線和寄生部可呈現一平面式結構。In some embodiments, the
第一天線110具有一第一饋入點(Feeding Point)FP1。第一饋入點FP1可耦接至一第一信號源(Signal Source)191,例如:一射頻(Radio Frequency,RF)模組,其可用於激發第一天線110。另外,第一天線110包括一第一饋入部(Feeding Element)120、一第一輻射部(Radiation Element)130,以及一短路部(Shorting Element)140。The
第一饋入部120可大致呈現一矩形或一直條形,其可完全設置於非導體支撐元件230之第一表面E1上。詳細而言,第一饋入部120具有一第一端121和一第二端122,其中第一饋入點FP1係位於第一饋入部120之第一端121處。The
第一輻射部130可大致呈現一U字形,其可由非導體支撐元件230之第一表面E1上延伸至第二表面E2上。詳細而言,第一輻射部130具有一第一端131和一第二端132,其中第一輻射部130之第一端131係耦接至第一饋入部120之第二端122,而第一輻射部130之第二端132為一開路端(Open End)。The first
短路部140可大致呈現一蜿蜒形狀(Meandering Shape),其可完全設置於非導體支撐元件230之第一表面E1上。詳細而言,短路部140具有一第一端141和一第二端142,其中短路部140之第一端141係耦接至一第一接地點(Grounding Point)GP1,而短路部140之第二端142係耦接至第一饋入部120之第二端122,使得第一饋入部120可經由短路部140耦接至第一接地點GP1。例如,第一接地點GP1可位於一接地元件(Ground Element)上之一第一位置,而此接地元件(未顯示)可用於提供一接地電位VSS。The short-
第二天線150具有一第二饋入點FP2。第二饋入點FP2可耦接至一第二信號源192,例如:另一射頻模組,其可用於激發第二天線150。另外,第二天線150包括一第二饋入部160、一第二輻射部170,以及一第三輻射部180。The
第二饋入部160可大致呈現一矩形或一直條形,其可完全設置於非導體支撐元件230之第一表面E1上。詳細而言,第二饋入部160具有一第一端161和一第二端162,其中第二饋入點FP2係位於第二饋入部160之第一端161處。The
第二輻射部170可大致呈現一較短直條形,其可完全設置於非導體支撐元件230之第一表面E1上。詳細而言,第二輻射部170具有一第一端171和一第二端172,其中第二輻射部170之第一端171係耦接至第二饋入部160之第二端162,而第二輻射部170之第二端172為一開路端。第一輻射部130之第二端132和第二輻射部170之第二端172可大致朝相反且互相靠近之方向作延伸。The
第三輻射部180可大致呈現一較長直條形,其可完全設置於非導體支撐元件230之第一表面E1上。詳細而言,第三輻射部180具有一第一端181和一第二端182,其中第三輻射部180之第一端181係耦接至第二饋入部160之第二端162,而第三輻射部180之第二端182為一開路端。第二輻射部170之第二端172和第三輻射部180之第二端182可大致朝相反且互相遠離之方向作延伸。在一些實施例中,第二饋入部160、第二輻射部170,以及第三輻射部180之一組合係大致呈現一T字形。The
第一寄生部210可大致呈現一倒L字形,其可由非導體支撐元件230之第一表面E1上延伸至第二表面E2上。詳細而言,第一寄生部210具有一第一端211和一第二端212,其中第一寄生部210之第一端211係耦接至一第二接地點GP2,而第一寄生部210之第二端212為一開路端。第二接地點GP2可位於接地元件上之一第二位置,其可異於前述之第一位置。第一寄生部210和短路部140之間可形成一第一耦合間隙(Coupling Gap)GC1。The first
第二寄生部220可大致呈現一L字形,其可由非導體支撐元件230之第一表面E1上延伸至第二表面E2上。詳細而言,第二寄生部220具有一第一端221和一第二端222,其中第二寄生部220之第一端221係耦接至一第三接地點GP3,而第二寄生部220之第二端222為一開路端。第三接地點GP3可位於接地元件上之一第三位置,其可異於前述之第一位置和第二位置。第一寄生部210之第二端212和第二寄生部220之第二端222可大致朝相反且互相遠離之方向作延伸。第二寄生部220和第二輻射部170之間可形成一第二耦合間隙GC2。在一些實施例中,第一寄生部210和第二寄生部220係沿天線系統100之中心線而呈現線對稱。The second
第3圖係顯示根據本發明一實施例所述之天線系統100之S參數(S-Parameter)圖,其中橫軸代表操作頻率(MHz),而縱軸代表S參數(dB)。若將第一饋入點FP1設定為一第一埠(Port 1)且將第二饋入點FP2設定為一第二埠(Port 2),則第3圖可展示關於第一天線110之一S11參數曲線S11、關於第二天線150之一S22參數曲線S22,以第一天線110和第二天線150之間之一S21參數曲線S21。根據第3圖之量測結果,第一天線110和第二天線150皆可涵蓋介於2496MHz至2690MHz之間之一第一頻帶FB1,以及介於3300MHz至3800MHz之間之一第二頻帶FB2。因此,天線系統100將至少可支援新世代5G通訊之Sub-6GHz頻段之寬頻操作(例如: N41和N78頻帶)。另外,在前述之第一頻帶FB1和第二頻帶FB2中,第一天線110和第二天線150之間之隔離度(Isolation)皆可維持至少10dB。Fig. 3 shows an S-Parameter (S-Parameter) diagram of the
第4圖係顯示根據本發明一實施例所述之天線系統100之輻射效率(Radiation Efficiency)圖,其中橫軸代表操作頻率(MHz),而縱軸代表輻射效率(dB)。第4圖可展示關於第一天線110之一第一輻射效率曲線AE1,以及關於第二天線150之一第二輻射效率曲線AE2。根據第4圖之量測結果,在前述之第一頻帶FB1和第二頻帶FB2中,第一天線110和第二天線150之每一者之輻射效率皆可達至少-4dB,此已可滿足一般行動通訊之實際應用需求。Figure 4 is a diagram showing the radiation efficiency (Radiation Efficiency) of the
在一些實施例中,天線系統100之操作原理可如下列所述。在第一天線110中,第一饋入部120和第一輻射部130可共同激發產生第一頻帶FB1,而第一饋入部120和短路部140可共同激發產生第二頻帶FB2。在第二天線150中,第二饋入部160和第二輻射部170可共同激發產生第二頻帶FB2,而第二饋入部160和第三輻射部180可共同激發產生第一頻帶FB1。根據實際量測結果,第一寄生部210和第二寄生部220可用於吸引不必要之共振電流(Resonant Current),其有助於強化第一天線110和第二天線150之間之隔離度,使得第一天線110和第二天線150不易發生互相干擾。In some embodiments, the operating principle of the
在一些實施例中,天線系統100之元件尺寸可如下列所述。第一饋入部120和第一輻射部130之總長度L1(亦即,由第一端121起,經第二端122和第一端131,再至第二端132之總長度L1)可介於第一頻帶FB1之0.15倍至0.2倍波長之間(0.15λ~0.2λ)。第一饋入部120和短路部140之總長度L2(亦即,由第一端121起,經第二端122和第二端142,再至第一端141之總長度L2)可介於第二頻帶FB2之0.3倍至0.4倍波長之間(0.3λ~0.4λ)。第二饋入部160和第二輻射部170之總長度L3(亦即,由第一端161起,經第二端162和第一端171,再至第二端172之總長度L3)可介於第二頻帶FB2之0.1倍至0.12倍波長之間(0.1λ~0.12λ)。第二饋入部160和第三輻射部180之總長度L4(亦即,由第一端161起,經第二端162和第一端181,再至第二端182之總長度L4)可介於第一頻帶FB1之0.12倍至0.14倍波長之間(0.12λ~0.14λ)。第一寄生部210和第二寄生部220之間距D1可介於1.1mm至2mm之間。第一寄生部210之長度LA(亦即,由第一端211起,至第二端212之長度LA)可介於第二頻帶FB2之0.24倍至0.26倍波長之間(0.24λ~0.26λ)。第二寄生部220之長度LB(亦即,由第一端221起,至第二端222之長度LB)可介於第二頻帶FB2之0.24倍至0.26倍波長之間(0.24λ~0.26λ)。第一耦合間隙GC1之寬度可介於2.8mm至3.6mm之間。第二耦合間隙GC2之寬度可介於2.8mm至3.6mm之間。以上元件尺寸範圍係根據多次實驗結果而求出,其有助於最佳化天線系統100之隔離度、操作頻寬(Operation Bandwidth),以及阻抗匹配(Impedance Matching)。In some embodiments, the element size of the
第5A圖係顯示根據本發明另一實施例所述之天線系統500之立體圖。第5B圖係顯示根據本發明另一實施例所述之天線系統500之立體圖(由不同視角)。在第5A、5B圖之實施例中,天線系統500係分佈於立體且不規則形狀之一非導體支撐元件上(未顯示),以相容於不同環境條件。根據實際量測結果,此種配置方式可增加設計彈性,但又不致於對天線系統500之輻射功效造成負面影響。第5A、5B圖之天線系統500之其餘特徵皆與第1、2圖之天線系統100類似,故此二實施例均可達成相似之操作效果。FIG. 5A is a perspective view of an
本發明提出一種新穎之天線系統,相較於傳統設計,本發明至少具有小尺寸、寬頻帶、高隔離度,以及低製造成本等優勢,故其很適合應用於各種各式之行動通訊裝置當中。The present invention proposes a novel antenna system. Compared with the traditional design, the present invention at least has the advantages of small size, wide frequency band, high isolation, and low manufacturing cost. Therefore, it is very suitable for various mobile communication devices. .
值得注意的是,以上所述之元件尺寸、元件形狀,以及頻率範圍皆非為本發明之限制條件。天線設計者可以根據不同需要調整這些設定值。本發明之天線系統並不僅限於第1-5圖所圖示之狀態。本發明可以僅包括第1-5圖之任何一或複數個實施例之任何一或複數項特徵。換言之,並非所有圖示之特徵均須同時實施於本發明之天線系統當中。It should be noted that the above-mentioned component size, component shape, and frequency range are not the limiting conditions of the present invention. The antenna designer can adjust these settings according to different needs. The antenna system of the present invention is not limited to the state illustrated in Figs. 1-5. The present invention may only include any one or more of the features of any one or more of the embodiments in FIGS. 1-5. In other words, not all the illustrated features need to be implemented in the antenna system of the present invention at the same time.
在本說明書以及申請專利範圍中的序數,例如「第一」、「第二」、「第三」等等,彼此之間並沒有順序上的先後關係,其僅用於標示區分兩個具有相同名字之不同元件。The ordinal numbers in this specification and the scope of the patent application, such as "first", "second", "third", etc., do not have a sequential relationship between each other, and they are only used to distinguish two having the same Different components of the name.
本發明雖以較佳實施例揭露如上,然其並非用以限定本發明的範圍,任何熟習此項技藝者,在不脫離本發明之精神和範圍內,當可做些許的更動與潤飾,因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。Although the present invention is disclosed as above in a preferred embodiment, it is not intended to limit the scope of the present invention. Anyone who is familiar with the art can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to those defined by the attached patent scope.
100、500:天線系統 110:第一天線 120:第一饋入部 121:第一饋入部之第一端 122:第一饋入部之第二端 130:第一輻射部 131:第一輻射部之第一端 132:第一輻射部之第二端 140:短路部 141:短路部之第一端 142:短路部之第二端 150:第二天線 160:第二饋入部 161:第二饋入部之第一端 162:第二饋入部之第二端 170:第二輻射部 171:第二輻射部之第一端 172:第二輻射部之第二端 180:第三輻射部 181:第三輻射部之第一端 182:第三輻射部之第二端 191:第一信號源 192:第二信號源 210:第一寄生部 211:第一寄生部之第一端 212:第一寄生部之第二端 220:第二寄生部 221:第二寄生部之第一端 222:第二寄生部之第二端 230:非導體支撐元件 AE1:第一輻射效率曲線 AE2:第二輻射效率曲線 D1:間距 E1:非導體支撐元件之第一表面 E2:非導體支撐元件之第二表面 FB1:第一頻帶 FB2:第二頻帶 FP1:第一饋入點 FP2:第二饋入點 GC1:第一耦合間隙 GC2:第二耦合間隙 GP1:第一接地點 GP2:第二接地點 GP3:第三接地點 L1、L2、L3、L4:總長度 LA、LB:長度 S11:S11參數曲線 S22:S22參數曲線 S21:S21參數曲線 VSS:接地電位 100, 500: antenna system 110: first antenna 120: The first feeding part 121: The first end of the first feeding part 122: The second end of the first feeding part 130: First Radiation Department 131: The first end of the first radiating part 132: The second end of the first radiating part 140: Short circuit part 141: The first end of the short circuit 142: The second end of the short-circuit part 150: second antenna 160: The second feeding part 161: The first end of the second feeding part 162: The second end of the second feeding part 170: Second Radiation Department 171: The first end of the second radiating part 172: The second end of the second radiating part 180: Third Radiation Department 181: The first end of the third radiating part 182: The second end of the third radiation part 191: First signal source 192: Second signal source 210: The first parasitic part 211: The first end of the first parasitic part 212: The second end of the first parasitic part 220: second parasite 221: The first end of the second parasitic part 222: The second end of the second parasitic part 230: non-conductor support element AE1: The first radiation efficiency curve AE2: second radiation efficiency curve D1: Spacing E1: The first surface of the non-conductor supporting element E2: The second surface of the non-conductor supporting element FB1: First frequency band FB2: Second frequency band FP1: the first feed point FP2: second feed point GC1: first coupling gap GC2: second coupling gap GP1: first ground point GP2: second ground point GP3: third ground point L1, L2, L3, L4: total length LA, LB: length S11: S11 parameter curve S22: S22 parameter curve S21: S21 parameter curve VSS: Ground potential
第1圖係顯示根據本發明一實施例所述之天線系統之前視圖。 第2圖係顯示根據本發明一實施例所述之天線系統之俯視圖。 第3圖係顯示根據本發明一實施例所述之天線系統之S參數圖。 第4圖係顯示根據本發明一實施例所述之天線系統之輻射效率圖。 第5A圖係顯示根據本發明另一實施例所述之天線系統之立體圖。 第5B圖係顯示根據本發明另一實施例所述之天線系統之立體圖。 Fig. 1 shows a front view of an antenna system according to an embodiment of the invention. Figure 2 is a top view of the antenna system according to an embodiment of the invention. Fig. 3 shows the S parameter diagram of the antenna system according to an embodiment of the invention. Figure 4 is a diagram showing the radiation efficiency of the antenna system according to an embodiment of the invention. FIG. 5A is a perspective view of an antenna system according to another embodiment of the invention. FIG. 5B is a perspective view of an antenna system according to another embodiment of the invention.
100:天線系統 100: Antenna system
110:第一天線 110: first antenna
120:第一饋入部 120: The first feeding part
121:第一饋入部之第一端 121: The first end of the first feeding part
122:第一饋入部之第二端 122: The second end of the first feeding part
130:第一輻射部 130: First Radiation Department
131:第一輻射部之第一端 131: The first end of the first radiating part
140:短路部 140: Short circuit part
141:短路部之第一端 141: The first end of the short circuit
142:短路部之第二端 142: The second end of the short-circuit part
150:第二天線 150: second antenna
160:第二饋入部 160: The second feeding part
161:第二饋入部之第一端 161: The first end of the second feeding part
162:第二饋入部之第二端 162: The second end of the second feeding part
170:第二輻射部 170: Second Radiation Department
171:第二輻射部之第一端 171: The first end of the second radiating part
172:第二輻射部之第二端 172: The second end of the second radiating part
180:第三輻射部 180: Third Radiation Department
181:第三輻射部之第一端 181: The first end of the third radiating part
182:第三輻射部之第二端 182: The second end of the third radiation part
191:第一信號源 191: First signal source
192:第二信號源 192: Second signal source
210:第一寄生部 210: The first parasitic part
211:第一寄生部之第一端 211: The first end of the first parasitic part
220:第二寄生部 220: second parasite
221:第二寄生部之第一端 221: The first end of the second parasitic part
230:非導體支撐元件 230: non-conductor support element
D1:間距 D1: Spacing
E1:非導體支撐元件之第一表面 E1: The first surface of the non-conductor supporting element
FP1:第一饋入點 FP1: the first feed point
FP2:第二饋入點 FP2: second feed point
GP1:第一接地點 GP1: first ground point
GP2:第二接地點 GP2: second ground point
GP3:第三接地點 GP3: third ground point
L1、L2、L3、L4:總長度 L1, L2, L3, L4: total length
LA、LB:長度 LA, LB: length
VSS:接地電位 VSS: Ground potential
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